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Are You Making a Disastrous Mistake by Overlooking the Latest Firefox 145 Security Protections?
Mozilla has just launched the latest version of its web browser, Firefox 145. This update brings several new tools and improvements for users. It also marks the end of support for 32-bit Linux systems. Security and bug fixes are also available in the Extended Support Release (ESR) versions.
Key Updates in Firefox 145
The new Firefox 145 introduces features to improve how you work with documents, manage tabs, and protect your privacy online.
- PDF Comments: You can now add, edit, or delete comments in PDF files directly within the browser.
- Tab Group Previews: Hovering your mouse over a tab group shows you all the tabs inside it without needing to click.
- MKV Video Support: Firefox now supports the Matroska (.mkv) file format for many popular video and audio types.
- Stronger Privacy: The browser has better protection against fingerprinting, a method used to track you online.
- Link to Highlighted Text: You can create special links that take people directly to a highlighted section of a webpage.
Enhanced Privacy and Security
Firefox 145 brings major upgrades to protect your online identity. The new anti-fingerprinting system makes it much harder for websites to identify you based on your browser and computer settings. This protection works in Private Browsing and when you set the Enhanced Tracking Protection to “Strict” mode. This update significantly reduces the chance of being identified by tracking scripts. Mozilla has fixed 16 security issues in this release, with several rated as high priority.
Better Productivity Tools
This update adds new features to help you be more productive. You can now manage your saved passwords directly from the sidebar, which saves you from having to open a separate menu. When working with PDF documents, you can add notes and comments, making it easier to review files or collaborate with others. The browser’s translation feature is also improved, especially when translating between languages that are written in different directions.
New Design and Media Features
Firefox 145 introduces some visual changes and new media capabilities. The browser tabs are now slightly more rounded to create a more consistent look. For video, the new support for MKV files means you can watch more types of video content without needing other software. You can also find new wallpapers inspired by the Firefox brand on the new tab page.
For Developers and Businesses
This release includes several updates for web developers. Firefox now supports new CSS properties like text-autospace and developer tools for better web creation. For enterprise users, new policies have been added to manage AI features and tracking protection settings.
The Future of Firefox
Mozilla plans to release Firefox 146 on December 9, 2025, and Firefox 147 on January 13, 2026. Support for 32-bit Linux has ended with version 145, and users are encouraged to switch to the 64-bit version or an ESR release for now.